Enable Position Independent Executable for production VPP

Change-Id: I0f81423b854be1dc456df696416e5f3747393208
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/build-data/platforms/vpp.mk b/build-data/platforms/vpp.mk
index c172972..6b795b7 100644
--- a/build-data/platforms/vpp.mk
+++ b/build-data/platforms/vpp.mk
@@ -53,7 +53,7 @@
 
 vpp_TAG_CFLAGS = -g -O2 -DFORTIFY_SOURCE=2 -fstack-protector -fPIC -Werror
 vpp_TAG_CXXFLAGS = -g -O2 -DFORTIFY_SOURCE=2 -fstack-protector -fPIC -Werror
-vpp_TAG_LDFLAGS = -g -O2 -DFORTIFY_SOURCE=2 -fstack-protector -fPIC -Werror
+vpp_TAG_LDFLAGS = -g -O2 -DFORTIFY_SOURCE=2 -fstack-protector -fPIC -Werror -pie -Wl,-z,now
 
 vpp_clang_TAG_CFLAGS = -g -O2 -DFORTIFY_SOURCE=2 -fstack-protector -fPIC -Werror
 vpp_clang_TAG_LDFLAGS = -g -O2 -DFORTIFY_SOURCE=2 -fstack-protector -fPIC -Werror